/Engine/Source/Editor/MeshPaint/Public/MeshPaintHelpers.h
static bool GetPerVertexPaintInfluencedVertices ( [FPerVertexPaintActionArgs](API\Editor\MeshPaint\FPerVertexPaintActionArgs) & InArgs, [TSet](API\Runtime\Core\Containers\TSet)< int32 > & InfluencedVertices )